YD322-III pressure transmitter is made with oil-filled isolation membrane-specific
integrated pressure sensors and instrumentation amplifier circuit, it has a high
accuracy, good stability, long life, high reliability, easy installation features.
Applicable to various liquid, gas pressure measurement.
Technical Parameters:
Output:
Analog: Two-wire 4~20mADC
Digital quantity: Two-wire 4~20mADC and overlay digital signal in line with the
HART protocol.
Power supply: 12.5~45VDC
Load limit: Loop Rmax maximum load resistance depends on the power supply
voltage. HART communication require the load resistance no less than 250Ω, and no
more than 600Ω
Communication distance: The maximum communication distance is 1.5Km,
Multistation communication can take up max15 units smart pressure transmitter.
Output display: Four digital display, five LCD display, pointer type.
Explosion-proof form: Basic type:ExiaII CT5; Explosion-proof type.
Zero shift range: Zero point can be arbitrary positive transfer and negative transfer,
but the upper and lower limit of measurement range and pressure range should not be
set exceeded.
Temperature Range: Environmental temperature: -40~85℃
(-20~70℃ when
select LCD indicator)
Medium temperature:
-40~104℃
Static
and
Unidirectional
pressure
range:
3.45Kpa(absolute
pressure)
31.2MPa(gauge pressure)
Relative humidity:
5~98%RH
Start time: Start in 5 second
Capacity changes: less than 0.16cm3
Damping adjustment:
0.20~25
Fault alarm: If there is a breakdown of sensor or circuit, automatic diagnosis
function will automatically output 3.9 or 21.0 mA.
Configuration protection: In order to avoid the transmitter is randomly change the
configuration data, can lock the stored data by software or protection switch.
Performance indicators
Reference conditions: Zero as the lower limit and no migration, the temperature is
25 ℃, the atmospheric pressure, 24 VDC power supply, silicone oil, isolation
diaphragm 316 stainless steel, data setting range is the same as the upper and lower
limit range.
Note: the instructions include linear precision, the influence of hysteresis and
repeatability.
Accuracy: ±0.1%(The error is less than 0.1% of full scale)
Stability:±0.1% URL/year
Temperature effect: ±0.05% (URL + 0.05% range) / 20 ℃
Static Pressure effects: Zero Error: the URL / 0.1 to 6.9 MPa
Vibration impact: Can stand a vibration of 200Hz frequency in any axia, cause a
error is ±0.05%URL
Power supply:The adjustable range is less than 0.005% / V
Load impact: No load effect
Installation position effect: About 250Pa zero migration, can be eliminate by
calibration, no scale effect.
Radio frequency interference: in the 30-1000 MHZ frequency and maximum field
strength under the condition of 10 v/m, caused by drift is ±0.1% of adjustable range.
Structure parameters
Wetted parts material
Isolation diaphragm: 316L stainless steel, Hastelloy, Monel or tantalum.
Vent and drain valve: 316 stainless steel, hartz alloy, monel or tantalum.
Flange and transition joints: Cadmium plating, carbon steel galvanized steel, 316
stainless steel, Hastelloy alloy
"O" Ring: Fluorine rubber
Non-wetted parts material
Filled liquid: silicone oil
Screw bolt: galvanized carbon steel
Electrical shell: low copper aluminum alloy
"O" Ring: Nitrile butadiene rubber
Coating: polyester epoxy resin
Pressure interface
Flange pressure: 1/4 - 18 NPT thread
Transition joint lead pressure: 1/2-14 NPT thread
Electrical interface
Conduit connections: M20X1.5, 1/2-14, NPT thread
Weight
2 kg (not including optional)